Seal



FIG. 1 is a top perspective of a seal, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view, the opposite side being a mirror image thereof; and,

FIG. 4 is a cross-sectional view taken along line IV--IV of FIG. 2. 

THe ornamental design for a seal, as shown. 